medium Set 89 Form Exercise

Number Chain: 8 → -2 → -3 → -2 → x2 → ?

Show answer

Answer: 2

SubType
number-chain
Start
8
Steps
  • {"op":"-","operand":2}
  • {"op":"-","operand":3}
  • {"op":"-","operand":2}
  • {"op":"x","operand":2}
Difficulty
medium

Number Chain: 3 → +3 → -3 → -2 → x4 → ?

Show answer

Answer: 4

SubType
number-chain
Start
3
Steps
  • {"op":"+","operand":3}
  • {"op":"-","operand":3}
  • {"op":"-","operand":2}
  • {"op":"x","operand":4}
Difficulty
medium

Number Chain: 4 → -2 → +5 → -2 → +5 → ?

Show answer

Answer: 10

SubType
number-chain
Start
4
Steps
  • {"op":"-","operand":2}
  • {"op":"+","operand":5}
  • {"op":"-","operand":2}
  • {"op":"+","operand":5}
Difficulty
medium

Number Chain: 8 → x5 → -38 → +2 → +10 → ?

Show answer

Answer: 14

SubType
number-chain
Start
8
Steps
  • {"op":"x","operand":5}
  • {"op":"-","operand":38}
  • {"op":"+","operand":2}
  • {"op":"+","operand":10}
Difficulty
medium

Number Chain: 8 → -7 → x4 → x2 → x3 → ?

Show answer

Answer: 24

SubType
number-chain
Start
8
Steps
  • {"op":"-","operand":7}
  • {"op":"x","operand":4}
  • {"op":"x","operand":2}
  • {"op":"x","operand":3}
Difficulty
medium

Number Chain: 6 → +6 → +7 → -2 → +2 → ?

Show answer

Answer: 19

SubType
number-chain
Start
6
Steps
  • {"op":"+","operand":6}
  • {"op":"+","operand":7}
  • {"op":"-","operand":2}
  • {"op":"+","operand":2}
Difficulty
medium

Number Chain: 1 → x3 → x5 → x4 → x5 → ?

Show answer

Answer: 300

SubType
number-chain
Start
1
Steps
  • {"op":"x","operand":3}
  • {"op":"x","operand":5}
  • {"op":"x","operand":4}
  • {"op":"x","operand":5}
Difficulty
medium

Number Chain: 1 → +7 → +9 → +7 → x4 → ?

Show answer

Answer: 96

SubType
number-chain
Start
1
Steps
  • {"op":"+","operand":7}
  • {"op":"+","operand":9}
  • {"op":"+","operand":7}
  • {"op":"x","operand":4}
Difficulty
medium